You'll need to provide evidence of the product's origin to claim the benefit.

Some argue that these are some evidence of its Athenian origin; but others, including William Smith discount the connection.

It turns out that some biological weapons contain unmistakable internal evidence of their origin.

Later studies of the spheres found unusual ratios of numerous other metals relative to the surrounding environment, which was taken as further evidence of their extraterrestrial origin.

The more evidence, I thought, of its origin.

"But it's hard to understand that with all the large features we see in the universe, we have no evidence of their origin."

He had confronted her with evidence of her true origin, in the form of letters from her mother to a Hylar soldier - her mother's secret lover.

Is this not better evidence of their independent origin, than is the fancied lineage with the Indo-Germanic family of their Oriental descent?

The scarce Wild Service Tree (which is evidence of the Woods's ancient origin) is scattered throughout the wood.

They gave evidence of their hasty and makeshift origin.